dont print NULL

Originally committed as revision 4600 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavcodec/opt.c b/libavcodec/opt.c
index 8934c23..9a3cd80 100644 (file)
--- a/libavcodec/opt.c
+++ b/libavcodec/opt.c
@@ -264,7 +264,9 @@ int av_opt_show(void *obj, void *av_log_obj){
         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_AUDIO_PARAM   ) ? 'A' : '.');
         av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_SUBTITLE_PARAM) ? 'S' : '.');
         
-        av_log(av_log_obj, AV_LOG_INFO, " %s\n", opt->help);
+        if(opt->help)
+            av_log(av_log_obj, AV_LOG_INFO, " %s", opt->help);
+        av_log(av_log_obj, AV_LOG_INFO, "\n");
     }
     return 0;
 }